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Physics
Physics
Problem
A particle is subjected to a force
F
=
5
i
^
+
4
j
^
−
3
k
^
N
\mathbf{F}=5\hat{i}+4\hat{j}-3\hat{k}\,\text{N}
F
=
5
i
^
+
4
j
^
−
3
k
^
N
while its instantaneous velocity is
v
=
2
i
^
−
j
^
+
4
k
^
m
s
−
1
\mathbf{v}=2\hat{i}-\hat{j}+4\hat{k}\,\text{m\,s}^{-1}
v
=
2
i
^
−
j
^
+
4
k
^
m
s
−
1
. The instantaneous power (in watt) is a)
26
26
26
b)
6
6
6
c)
−
6
-6
−
6
d)
18
18
18
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